<?php
namespace Zeke\Io\Loop\Timer;

use Zeke\Contracts\Io\Loop\Timer\TimerContract;

/**
 * The actual connection implementation for TimerInterface
 *
 * This class should only be used internally, see TimerInterface instead.
 *
 * @see TimerInterface
 */
final class Timer implements TimerContract
{



    const MIN_INTERVAL = 0.000001;


    private $interval;
    private $callback;
    private $periodic;




    /**
     * Constructor initializes the fields of the Timer
     *
     * @param float         $interval The interval after which this timer will execute, in seconds
     * @param callable      $callback The callback that will be executed when this timer elapses
     * @param bool          $periodic Whether the time is periodic
     */
    public function __construct($interval, $callback, $periodic = false)
    {
        if ($interval < self::MIN_INTERVAL) {
            $interval = self::MIN_INTERVAL;
        }
        $this->interval = (float) $interval;
        $this->callback = $callback;
        $this->periodic = (bool) $periodic;
    }


    /**
     * 间隔时间
     * @return float
     * @author liu.bin 2018/8/2 18:44
     */
    public function getInterval()
    {
        return $this->interval;
    }


    /**
     * 回调
     *
     * @return callable
     * @author liu.bin 2018/8/2 18:44
     */
    public function getCallback()
    {
        return $this->callback;
    }


    /**
     * 周期循环
     *
     * @return bool
     * @author liu.bin 2018/8/2 18:45
     */
    public function isPeriodic()
    {
        return $this->periodic;
    }
}